I also agree with this!

I think the ideal model would be being able to depend on upstream code, but being able to review ALL of the actual code changes when pulling in new dependency versions (with a nice UI) and being able to vendor things and branch off with a single command whenever you need it, so you don't have to maintain it yourself by default but it's trivial when you want to.

It's actually surprising that in regards to front end development the whole shadcn approach hasn't gotten more popular. Or anywhere else for that matter, focusing on making code way more easy to maintain, to compile/deploy, with less complexity along the way.